92 sc400 codes 14 and 15

So i have been searching all day and im stumped. I started my car this morning and its running fine. Go to leave for work put it in gear and it has a misfire. so turned it off did some searching checked the codes and got 14 and 15. seen similar problems where the car doesnt run but mine still does and if i let it sit for a bit start it and it runs fine again for a few minutes or you put it in gear then misfire. im really confused has been running no problem then this. any help would be appreciated thanks

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14 = Igniter signal, 15 = Ignitor signal. I bet that your coils (or ignition coils) went. While the vehicle is on idle, unplug one at a time. If the idle changes, you know that coil is good. There are two on your SC.

ok thanks thats kinda what i was thinking but since this is my first sc i wanted some imput before i spend money on something i dont need. last night i started it drove 3 miles to town started missing when i got there. then on the way back it got way worse. crazy cause it drives fine all the time parked it for 2 days to fix my headlights and replace the front upper support and hood hinges now this lol.. i give that a try i appreciate it.

been trying to search for grounds. did they decide to hide a few? someone said that there might be moisture in the gas tank cause when missing it runs fine for a minute then misses then fine for a minute then misses again.. or could it possibly be my altenator going out on me and not sending the right amount of juice to the system?